/*
 * Copyright (C) 2005-2011 MaNGOS <http://www.getmangos.com/>
 *
 * Copyright (C) 2008-2011 Trinity <http://www.trinitycore.org/>
 *
 * Copyright (C) 2010-2011 ProjectSkyfire <http://www.projectskyfire.org/>
 * 
 * Copyright (C) 2011 ArkCORE <http://www.arkania.net/>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#ifdef _WIN32

#include "Common.h"
#include "Log.h"
#include <cstring>
#include <windows.h>
#include <winsvc.h>

// stupid ACE define
#ifdef main
#undef main
#endif //main
#if !defined(WINADVAPI)
#if !defined(_ADVAPI32_)
#define WINADVAPI DECLSPEC_IMPORT
#else
#define WINADVAPI
#endif
#endif

extern int main(int argc, char ** argv);
extern char serviceLongName[];
extern char serviceName[];
extern char serviceDescription[];

extern int m_ServiceStatus;

SERVICE_STATUS serviceStatus;

SERVICE_STATUS_HANDLE serviceStatusHandle = 0;

typedef WINADVAPI BOOL (WINAPI *CSD_T)(SC_HANDLE, DWORD, LPCVOID);

bool WinServiceInstall()
{
	CSD_T ChangeService_Config2;
	HMODULE advapi32;
	SC_HANDLE serviceControlManager = OpenSCManager(0, 0, SC_MANAGER_CREATE_SERVICE);

	if (serviceControlManager)
	{
		char path[_MAX_PATH + 10];
		if (GetModuleFileName( 0, path, sizeof(path)/sizeof(path[0]) ) > 0)
		{
			SC_HANDLE service;
			std::strcat(path, " --service");
			service = CreateService(serviceControlManager,
					serviceName, // name of service
					serviceLongName,// service name to display
					SERVICE_ALL_ACCESS,// desired access
									   // service type
					SERVICE_WIN32_OWN_PROCESS | SERVICE_INTERACTIVE_PROCESS,
					SERVICE_AUTO_START,// start type
					SERVICE_ERROR_IGNORE,// error control type
					path,// service's binary
					0,// no load ordering group
					0,// no tag identifier
					0,// no dependencies
					0,// LocalSystem account
					0);// no password
			if (service)
			{
				advapi32 = GetModuleHandle("ADVAPI32.DLL");
				if (!advapi32)
				{
					CloseServiceHandle(service);
					CloseServiceHandle(serviceControlManager);
					return false;
				}

				ChangeService_Config2 = (CSD_T) GetProcAddress(advapi32, "ChangeServiceConfig2A");
				if (!ChangeService_Config2)
				{
					CloseServiceHandle(service);
					CloseServiceHandle(serviceControlManager);
					return false;
				}

				SERVICE_DESCRIPTION sdBuf;
				sdBuf.lpDescription = serviceDescription;
				ChangeService_Config2(
						service, // handle to service
						SERVICE_CONFIG_DESCRIPTION,// change: description
						&sdBuf);// new data

				SC_ACTION _action[1];
				_action[0].Type = SC_ACTION_RESTART;
				_action[0].Delay = 10000;
				SERVICE_FAILURE_ACTIONS sfa;
				ZeroMemory(&sfa, sizeof(SERVICE_FAILURE_ACTIONS));
				sfa.lpsaActions = _action;
				sfa.cActions = 1;
				sfa.dwResetPeriod =INFINITE;
				ChangeService_Config2(
						service,// handle to service
						SERVICE_CONFIG_FAILURE_ACTIONS,// information level
						&sfa);// new data

				CloseServiceHandle(service);
			}
		}
		CloseServiceHandle(serviceControlManager);
	}
	return true;
}

bool WinServiceUninstall()
{
	SC_HANDLE serviceControlManager = OpenSCManager(0, 0, SC_MANAGER_CONNECT);

	if (serviceControlManager)
	{
		SC_HANDLE service = OpenService(serviceControlManager,
				serviceName, SERVICE_QUERY_STATUS | DELETE);
		if (service)
		{
			SERVICE_STATUS serviceStatus2;
			if (QueryServiceStatus(service, &serviceStatus2))
			{
				if (serviceStatus2.dwCurrentState == SERVICE_STOPPED)
				DeleteService(service);
			}
			CloseServiceHandle(service);
		}

		CloseServiceHandle(serviceControlManager);
	}
	return true;
}

void WINAPI ServiceControlHandler(DWORD controlCode)
{
	switch (controlCode)
	{
		case SERVICE_CONTROL_INTERROGATE:
		break;

		case SERVICE_CONTROL_SHUTDOWN:
		case SERVICE_CONTROL_STOP:
		serviceStatus.dwCurrentState = SERVICE_STOP_PENDING;
		SetServiceStatus(serviceStatusHandle, &serviceStatus);

		m_ServiceStatus = 0;
		return;

		case SERVICE_CONTROL_PAUSE:
		m_ServiceStatus = 2;
		serviceStatus.dwCurrentState = SERVICE_PAUSED;
		SetServiceStatus(serviceStatusHandle, &serviceStatus);
		break;

		case SERVICE_CONTROL_CONTINUE:
		serviceStatus.dwCurrentState = SERVICE_RUNNING;
		SetServiceStatus(serviceStatusHandle, &serviceStatus);
		m_ServiceStatus = 1;
		break;

		default:
		if ( controlCode >= 128 && controlCode <= 255 )
		// user defined control code
		break;
		else
		// unrecognized control code
		break;
	}

	SetServiceStatus(serviceStatusHandle, &serviceStatus);
}

void WINAPI ServiceMain(DWORD argc, char *argv[])
{
	// initialise service status
	serviceStatus.dwServiceType = SERVICE_WIN32;
	serviceStatus.dwCurrentState = SERVICE_START_PENDING;
	serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE;
	serviceStatus.dwWin32ExitCode = NO_ERROR;
	serviceStatus.dwServiceSpecificExitCode = NO_ERROR;
	serviceStatus.dwCheckPoint = 0;
	serviceStatus.dwWaitHint = 0;

	serviceStatusHandle = RegisterServiceCtrlHandler(serviceName, ServiceControlHandler);

	if ( serviceStatusHandle )
	{
		char path[_MAX_PATH + 1];
		unsigned int i, last_slash = 0;

		GetModuleFileName(0, path, sizeof(path)/sizeof(path[0]));

		for (i = 0; i < std::strlen(path); i++)
		{
			if (path[i] == '\\') last_slash = i;
		}

		path[last_slash] = 0;

		// service is starting
		serviceStatus.dwCurrentState = SERVICE_START_PENDING;
		SetServiceStatus(serviceStatusHandle, &serviceStatus);

		// do initialisation here
		SetCurrentDirectory(path);

		// running
		serviceStatus.dwControlsAccepted |= (SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN);
		serviceStatus.dwCurrentState = SERVICE_RUNNING;
		SetServiceStatus( serviceStatusHandle, &serviceStatus );

		////////////////////////
		// service main cycle //
		////////////////////////

		m_ServiceStatus = 1;
		argc = 1;
		main(argc , argv);

		// service was stopped
		serviceStatus.dwCurrentState = SERVICE_STOP_PENDING;
		SetServiceStatus(serviceStatusHandle, &serviceStatus);

		// do cleanup here

		// service is now stopped
		serviceStatus.dwControlsAccepted &= ~(SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN);
		serviceStatus.dwCurrentState = SERVICE_STOPPED;
		SetServiceStatus(serviceStatusHandle, &serviceStatus);
	}
}

bool WinServiceRun()
{
	SERVICE_TABLE_ENTRY serviceTable[] =
	{
		{	serviceName, ServiceMain},
		{	0, 0}
	};

	if (!StartServiceCtrlDispatcher(serviceTable))
	{
		sLog->outError("StartService Failed. Error [%u]", ::GetLastError());
		return false;
	}
	return true;
}
#endif
